This is the ONLY move that Treecko can inherit via Egg move:
Not too worthwhile, because Crunch doesn't go well with Treecko's lower Attack stat.
Let's see it TM/HM wise then:
- Focus Punch
- Toxic
- Hidden Power
- Sunny Day
- Protect
- Frustration
- Iron Tail
- Dig
- Brick Break
- Double Team
- Rock Tomb
- Aerial Ace
- Facade
- Secret Power
- Rest
- Attract
- Fling
- Endure
- Swords Dance
- Captivate
- Rock Slide
- Sleep Talk
- Natural Gift
- Swagger
- Substitute
- Cut
- Strength
- Rock Smash
Not worthwhile. Most of them are Physical and Status moves. And Treecko has poor attack.